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<div class="title">quantum_condition_variable_impl.h</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">** Copyright 2018 Bloomberg Finance L.P.</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">**</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">** Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">** you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">** You may obtain a copy of the License at</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">**</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">**     http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">**</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">** Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">** distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">** See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">** limitations under the License.</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">*/</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">//NOTE: DO NOT INCLUDE DIRECTLY</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;</div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">//##############################################################################################</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">//#################################### IMPLEMENTATIONS #########################################</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">//##############################################################################################</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="keyword">namespace </span><a class="code" href="../../d6/db9/namespaceBloomberg.html">Bloomberg</a> {</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="keyword">namespace </span>quantum {</div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;thread_local <span class="keyword">static</span> std::atomic_int s_threadSignal{-1}; <span class="comment">//thread specific (non-coroutine)</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="keyword">inline</span></div><div class="line"><a name="l00028"></a><span class="lineno"><a class="line" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#ad4bab37cb921df0f105899bb3eae1cc9">   28</a></span>&#160;<a class="code" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#ad4bab37cb921df0f105899bb3eae1cc9">ConditionVariable::ConditionVariable</a>() :</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    _destroyed(false)</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;{}</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="keyword">inline</span></div><div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#a08203af67a4ce39ca5e1e6769708a38b">   33</a></span>&#160;<a class="code" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#a08203af67a4ce39ca5e1e6769708a38b">ConditionVariable::~ConditionVariable</a>()</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;{</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    <a class="code" href="../../d8/dbb/classBloomberg_1_1quantum_1_1Mutex_1_1Guard.html">Mutex::Guard</a> lock(_thisLock);</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    _destroyed = <span class="keyword">true</span>;</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;}</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="keyword">inline</span></div><div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#a0f859966efc3dfe0afad40e4fb835136">   40</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#a0f859966efc3dfe0afad40e4fb835136">ConditionVariable::notifyOne</a>()</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;{</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    <span class="comment">//LOCKED OR UNLOCKED SCOPE</span></div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    <a class="code" href="../../d8/dbb/classBloomberg_1_1quantum_1_1Mutex_1_1Guard.html">Mutex::Guard</a> lock(_thisLock);</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    <span class="keywordflow">if</span> (_waiters.empty())</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    {</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;        <span class="keywordflow">return</span>;</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    }</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    (*_waiters.front()) = 1;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    _waiters.pop_front();</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;}</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="keyword">inline</span></div><div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#a05cd00d3eda2a7de34c60171997a5b9b">   53</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#a05cd00d3eda2a7de34c60171997a5b9b">ConditionVariable::notifyAll</a>()</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;{</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    <span class="comment">//LOCKED OR UNLOCKED SCOPE</span></div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;    <a class="code" href="../../d8/dbb/classBloomberg_1_1quantum_1_1Mutex_1_1Guard.html">Mutex::Guard</a> lock(_thisLock);</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    <span class="keywordflow">for</span> (<span class="keyword">auto</span>&amp;&amp; waiter : _waiters)</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    {</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;        (*waiter) = 1;</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    }</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    _waiters.clear();</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;}</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="keyword">inline</span></div><div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#abe7b890f30ad7a1be940d25b694b02d2">   65</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#abe7b890f30ad7a1be940d25b694b02d2">ConditionVariable::wait</a>(<a class="code" href="../../d8/da3/namespaceMutex.html">Mutex</a>&amp; mutex)</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;{</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    waitImpl(<a class="code" href="../../dc/d48/namespaceBloomberg_1_1quantum.html#ab4861ce4c0d0ece44adc70e68ff02131">YieldingThread</a>(), mutex, s_threadSignal);</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;}</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="keyword">inline</span></div><div class="line"><a name="l00071"></a><span class="lineno"><a class="line" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#a7de4ad4bcb968534a62113f1665ace7d">   71</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#abe7b890f30ad7a1be940d25b694b02d2">ConditionVariable::wait</a>(<a class="code" href="../../d3/d63/structBloomberg_1_1quantum_1_1ICoroSync.html#a109b2c4b7d70d53d48bb640a9d849b29">ICoroSync::Ptr</a> sync, <a class="code" href="../../d8/da3/namespaceMutex.html">Mutex</a>&amp; mutex)</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;{</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    waitImpl(sync-&gt;getYieldHandle(), mutex, sync-&gt;signal());</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;}</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> PREDICATE&gt;</div><div class="line"><a name="l00077"></a><span class="lineno"><a class="line" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#a2546689d28052412078ccbcb8bbb19d3">   77</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#abe7b890f30ad7a1be940d25b694b02d2">ConditionVariable::wait</a>(<a class="code" href="../../d8/da3/namespaceMutex.html">Mutex</a>&amp; mutex,</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;                             PREDICATE predicate)</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;{</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    waitImpl(<a class="code" href="../../dc/d48/namespaceBloomberg_1_1quantum.html#ab4861ce4c0d0ece44adc70e68ff02131">YieldingThread</a>(), mutex, predicate, s_threadSignal);</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;}</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> PREDICATE&gt;</div><div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#a783dc16b839258c68e4201dec3a878c0">   84</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#abe7b890f30ad7a1be940d25b694b02d2">ConditionVariable::wait</a>(<a class="code" href="../../d3/d63/structBloomberg_1_1quantum_1_1ICoroSync.html#a109b2c4b7d70d53d48bb640a9d849b29">ICoroSync::Ptr</a> sync,</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;                             <a class="code" href="../../d8/da3/namespaceMutex.html">Mutex</a>&amp; mutex,</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;                             PREDICATE predicate)</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;{</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;    waitImpl(sync-&gt;getYieldHandle(), mutex, predicate, sync-&gt;signal());</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;}</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> REP, <span class="keyword">class</span> PERIOD&gt;</div><div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#aacb866ea4801a40238fbb83341a37ec7">   92</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#aacb866ea4801a40238fbb83341a37ec7">ConditionVariable::waitFor</a>(<a class="code" href="../../d8/da3/namespaceMutex.html">Mutex</a>&amp; mutex,</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;                                <span class="keyword">const</span> std::chrono::duration&lt;REP, PERIOD&gt;&amp; time)</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;{</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    <span class="keywordflow">return</span> waitForImpl(<a class="code" href="../../dc/d48/namespaceBloomberg_1_1quantum.html#ab4861ce4c0d0ece44adc70e68ff02131">YieldingThread</a>(), mutex, time, s_threadSignal);</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;}</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> REP, <span class="keyword">class</span> PERIOD&gt;</div><div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#a4b32b0515b2892e1c9d40adffd475dd1">   99</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#aacb866ea4801a40238fbb83341a37ec7">ConditionVariable::waitFor</a>(<a class="code" href="../../d3/d63/structBloomberg_1_1quantum_1_1ICoroSync.html#a109b2c4b7d70d53d48bb640a9d849b29">ICoroSync::Ptr</a> sync,</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;                                <a class="code" href="../../d8/da3/namespaceMutex.html">Mutex</a>&amp; mutex,</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;                                <span class="keyword">const</span> std::chrono::duration&lt;REP, PERIOD&gt;&amp; time)</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;{</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    <span class="keywordflow">return</span> waitForImpl(sync-&gt;getYieldHandle(), mutex, time, sync-&gt;signal());</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;}</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> REP, <span class="keyword">class</span> PERIOD, <span class="keyword">class</span> PREDICATE&gt;</div><div class="line"><a name="l00107"></a><span class="lineno"><a class="line" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#a5569866c59a52f73643c07ccd8d37a1b">  107</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#aacb866ea4801a40238fbb83341a37ec7">ConditionVariable::waitFor</a>(<a class="code" href="../../d8/da3/namespaceMutex.html">Mutex</a>&amp; mutex,</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;                                <span class="keyword">const</span> std::chrono::duration&lt;REP, PERIOD&gt;&amp; time,</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;                                PREDICATE predicate)</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;{</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;    <span class="keywordflow">return</span> waitForImpl(<a class="code" href="../../dc/d48/namespaceBloomberg_1_1quantum.html#ab4861ce4c0d0ece44adc70e68ff02131">YieldingThread</a>(), mutex, time, predicate, s_threadSignal);</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;}</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> REP, <span class="keyword">class</span> PERIOD, <span class="keyword">class</span> PREDICATE&gt;</div><div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#aa33398e69fa1f6e6e8a7bd4a802abc21">  115</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#aacb866ea4801a40238fbb83341a37ec7">ConditionVariable::waitFor</a>(<a class="code" href="../../d3/d63/structBloomberg_1_1quantum_1_1ICoroSync.html#a109b2c4b7d70d53d48bb640a9d849b29">ICoroSync::Ptr</a> sync,</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;                                <a class="code" href="../../d8/da3/namespaceMutex.html">Mutex</a>&amp; mutex,</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;                                <span class="keyword">const</span> std::chrono::duration&lt;REP, PERIOD&gt;&amp; time,</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;                                PREDICATE predicate)</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;{</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;    <span class="keywordflow">return</span> waitForImpl(sync-&gt;getYieldHandle(), mutex, time, predicate, sync-&gt;signal());</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;}</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> YIELDING&gt;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;<span class="keywordtype">void</span> ConditionVariable::waitImpl(YIELDING&amp;&amp; yield,</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;                                 <a class="code" href="../../d8/da3/namespaceMutex.html">Mutex</a>&amp; mutex,</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;                                 std::atomic_int&amp; signal)</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;{</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;    {<span class="comment">//========= LOCKED SCOPE =========</span></div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;        <a class="code" href="../../d8/dbb/classBloomberg_1_1quantum_1_1Mutex_1_1Guard.html">Mutex::Guard</a> lock(_thisLock);</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;        <span class="keywordflow">if</span> (_destroyed)</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;        {</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;            <span class="keywordflow">return</span>; <span class="comment">//don&#39;t release the mutex</span></div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;        }</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;        signal = 0; <span class="comment">//clear signal flag</span></div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        _waiters.push_back(&amp;signal);</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    }</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    <span class="comment">//========= UNLOCKED SCOPE =========</span></div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;    <a class="code" href="../../de/d64/classMutex_1_1ReverseGuard.html">Mutex::ReverseGuard</a> unlock(mutex);</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    <span class="keywordflow">while</span> ((signal == 0) &amp;&amp; !_destroyed)</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;    {</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        yield();</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    }</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    signal = -1; <span class="comment">//reset</span></div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;}</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> YIELDING, <span class="keyword">class</span> PREDICATE&gt;</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;<span class="keywordtype">void</span> ConditionVariable::waitImpl(YIELDING&amp;&amp; yield,</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;                                 <a class="code" href="../../d8/da3/namespaceMutex.html">Mutex</a>&amp; mutex,</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;                                 PREDICATE predicate,</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;                                 std::atomic_int&amp; signal)</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;{</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;    <span class="keywordflow">while</span> (!predicate() &amp;&amp; !_destroyed)</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;    {</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;        waitImpl(std::forward&lt;YIELDING&gt;(yield), mutex, signal);</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    }</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;}</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> YIELDING, <span class="keyword">class</span> REP, <span class="keyword">class</span> PERIOD&gt;</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;<span class="keywordtype">bool</span> ConditionVariable::waitForImpl(YIELDING&amp;&amp; yield,</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;                                    <a class="code" href="../../d8/da3/namespaceMutex.html">Mutex</a>&amp; mutex,</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;                                    std::chrono::duration&lt;REP, PERIOD&gt;&amp; time,</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;                                    std::atomic_int&amp; signal)</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;{</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    {<span class="comment">//========= LOCKED SCOPE =========</span></div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;        <a class="code" href="../../df/df3/classMutex_1_1Guard.html">Mutex::Guard</a> lock(_thisLock);</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;        <span class="keywordflow">if</span> (_destroyed)</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;        {</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">true</span>; <span class="comment">//don&#39;t release the mutex</span></div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;        }</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;        <span class="keywordflow">if</span> (time == std::chrono::duration&lt;REP, PERIOD&gt;::zero())</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;        {</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">//timeout</span></div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        }</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;        signal = 0; <span class="comment">//clear signal flag</span></div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;        _waiters.push_back(&amp;signal);</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    }</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    <span class="comment">//========= UNLOCKED SCOPE =========</span></div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    <a class="code" href="../../de/d64/classMutex_1_1ReverseGuard.html">Mutex::ReverseGuard</a> unlock(mutex);</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;    <span class="keyword">auto</span> start = std::chrono::high_resolution_clock::now();</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;    <span class="keyword">auto</span> elapsed = std::chrono::duration&lt;REP, PERIOD&gt;::zero();</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;    <span class="keywordtype">bool</span> timeout = <span class="keyword">false</span>;</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;    </div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;    <span class="comment">//wait until signalled or times out</span></div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;    <span class="keywordflow">while</span> ((signal == 0) &amp;&amp; !_destroyed)</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    {</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;        yield();</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;        elapsed = std::chrono::duration_cast&lt;std::chrono::duration&lt;REP, PERIOD&gt;&gt;(std::chrono::high_resolution_clock::now() - start);</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;        <span class="keywordflow">if</span> (elapsed &gt;= time)</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;        {</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;            timeout = <span class="keyword">true</span>;</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;            <span class="keywordflow">break</span>; <span class="comment">//expired time</span></div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;        }</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;    }</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;    </div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;    signal = -1; <span class="comment">//reset signal flag</span></div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;    </div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;    <span class="comment">//adjust duration or set to zero if nothing remains</span></div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;    time = timeout ? std::chrono::duration&lt;REP, PERIOD&gt;::zero() : time - elapsed;</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;    <span class="keywordflow">return</span> !timeout;</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;}</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">class</span> YIELDING, <span class="keyword">class</span> REP, <span class="keyword">class</span> PERIOD, <span class="keyword">class</span> PREDICATE&gt;</div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;<span class="keywordtype">bool</span> ConditionVariable::waitForImpl(YIELDING&amp;&amp; yield,</div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;                                    <a class="code" href="../../d8/da3/namespaceMutex.html">Mutex</a>&amp; mutex,</div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;                                    <span class="keyword">const</span> std::chrono::duration&lt;REP, PERIOD&gt;&amp; time,</div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;                                    PREDICATE predicate,</div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;                                    std::atomic_int&amp; signal)</div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;{</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;    <span class="keywordflow">if</span> (time &gt; std::chrono::duration&lt;REP, PERIOD&gt;(0)) {</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;        <span class="keyword">auto</span> duration = time;</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;        <span class="keywordflow">while</span> (!predicate() &amp;&amp; !_destroyed)</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;        {</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;            <span class="keywordflow">if</span> (!waitForImpl(std::forward&lt;YIELDING&gt;(yield), mutex, duration, signal))</div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;            {</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;                <span class="comment">//timeout</span></div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;                <span class="keywordflow">return</span> predicate();</div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;            }</div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;        }</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;    }</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">true</span>; <span class="comment">//duration has not yet expired</span></div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;}</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;}}</div><div class="ttc" id="classBloomberg_1_1quantum_1_1ConditionVariable_html_a0f859966efc3dfe0afad40e4fb835136"><div class="ttname"><a href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#a0f859966efc3dfe0afad40e4fb835136">Bloomberg::quantum::ConditionVariable::notifyOne</a></div><div class="ttdeci">void notifyOne()</div><div class="ttdoc">Notify one waiting thread or coroutine.</div><div class="ttdef"><b>Definition:</b> quantum_condition_variable_impl.h:40</div></div>
<div class="ttc" id="namespaceBloomberg_html"><div class="ttname"><a href="../../d6/db9/namespaceBloomberg.html">Bloomberg</a></div><div class="ttdef"><b>Definition:</b> quantum_buffer_impl.h:22</div></div>
<div class="ttc" id="classBloomberg_1_1quantum_1_1ConditionVariable_html_a05cd00d3eda2a7de34c60171997a5b9b"><div class="ttname"><a href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#a05cd00d3eda2a7de34c60171997a5b9b">Bloomberg::quantum::ConditionVariable::notifyAll</a></div><div class="ttdeci">void notifyAll()</div><div class="ttdoc">Notify all waiting threads and coroutines.</div><div class="ttdef"><b>Definition:</b> quantum_condition_variable_impl.h:53</div></div>
<div class="ttc" id="structBloomberg_1_1quantum_1_1ICoroSync_html_a109b2c4b7d70d53d48bb640a9d849b29"><div class="ttname"><a href="../../d3/d63/structBloomberg_1_1quantum_1_1ICoroSync.html#a109b2c4b7d70d53d48bb640a9d849b29">Bloomberg::quantum::ICoroSync::Ptr</a></div><div class="ttdeci">std::shared_ptr&lt; ICoroSync &gt; Ptr</div><div class="ttdef"><b>Definition:</b> quantum_icoro_sync.h:36</div></div>
<div class="ttc" id="namespaceMutex_html"><div class="ttname"><a href="../../d8/da3/namespaceMutex.html">Mutex</a></div></div>
<div class="ttc" id="classBloomberg_1_1quantum_1_1ConditionVariable_html_a08203af67a4ce39ca5e1e6769708a38b"><div class="ttname"><a href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#a08203af67a4ce39ca5e1e6769708a38b">Bloomberg::quantum::ConditionVariable::~ConditionVariable</a></div><div class="ttdeci">~ConditionVariable()</div><div class="ttdoc">Destructor.</div><div class="ttdef"><b>Definition:</b> quantum_condition_variable_impl.h:33</div></div>
<div class="ttc" id="namespaceBloomberg_1_1quantum_html_ab4861ce4c0d0ece44adc70e68ff02131"><div class="ttname"><a href="../../dc/d48/namespaceBloomberg_1_1quantum.html#ab4861ce4c0d0ece44adc70e68ff02131">Bloomberg::quantum::YieldingThread</a></div><div class="ttdeci">YieldingThreadDuration&lt; std::chrono::microseconds &gt; YieldingThread</div><div class="ttdef"><b>Definition:</b> quantum_yielding_thread.h:57</div></div>
<div class="ttc" id="classMutex_1_1ReverseGuard_html"><div class="ttname"><a href="../../de/d64/classMutex_1_1ReverseGuard.html">Mutex::ReverseGuard</a></div><div class="ttdoc">Opposite form of RAII-style mechanism for mutex ownership. Releases a mutex on construction and acqui...</div></div>
<div class="ttc" id="classBloomberg_1_1quantum_1_1ConditionVariable_html_ad4bab37cb921df0f105899bb3eae1cc9"><div class="ttname"><a href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#ad4bab37cb921df0f105899bb3eae1cc9">Bloomberg::quantum::ConditionVariable::ConditionVariable</a></div><div class="ttdeci">ConditionVariable()</div><div class="ttdoc">Default constructor.</div><div class="ttdef"><b>Definition:</b> quantum_condition_variable_impl.h:28</div></div>
<div class="ttc" id="classMutex_1_1Guard_html"><div class="ttname"><a href="../../df/df3/classMutex_1_1Guard.html">Mutex::Guard</a></div><div class="ttdoc">RAII-style mechanism for mutex ownership. Acquires a mutex on construction and releases it inside the...</div></div>
<div class="ttc" id="classBloomberg_1_1quantum_1_1Mutex_1_1Guard_html"><div class="ttname"><a href="../../d8/dbb/classBloomberg_1_1quantum_1_1Mutex_1_1Guard.html">Bloomberg::quantum::Mutex::Guard</a></div><div class="ttdef"><b>Definition:</b> quantum_mutex.h:73</div></div>
<div class="ttc" id="classBloomberg_1_1quantum_1_1ConditionVariable_html_aacb866ea4801a40238fbb83341a37ec7"><div class="ttname"><a href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#aacb866ea4801a40238fbb83341a37ec7">Bloomberg::quantum::ConditionVariable::waitFor</a></div><div class="ttdeci">bool waitFor(Mutex &amp;mutex, const std::chrono::duration&lt; REP, PERIOD &gt; &amp;time)</div><div class="ttdoc">Block the current thread until the condition is signalled via notifyOne() or notifyAll() or until 'ti...</div><div class="ttdef"><b>Definition:</b> quantum_condition_variable_impl.h:92</div></div>
<div class="ttc" id="classBloomberg_1_1quantum_1_1ConditionVariable_html_abe7b890f30ad7a1be940d25b694b02d2"><div class="ttname"><a href="../../da/d9d/classBloomberg_1_1quantum_1_1ConditionVariable.html#abe7b890f30ad7a1be940d25b694b02d2">Bloomberg::quantum::ConditionVariable::wait</a></div><div class="ttdeci">void wait(Mutex &amp;mutex)</div><div class="ttdoc">Block the current thread until the condition is signalled via notifyOne() or notifyAll().</div><div class="ttdef"><b>Definition:</b> quantum_condition_variable_impl.h:65</div></div>
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